From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D887DC433E0 for ; Thu, 30 Jul 2020 20:17:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1CEA20829 for ; Thu, 30 Jul 2020 20:17:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Z2MOQLXQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730281AbgG3UR0 (ORCPT ); Thu, 30 Jul 2020 16:17:26 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:28689 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726495AbgG3UR0 (ORCPT ); Thu, 30 Jul 2020 16:17:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1596140245; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type; bh=qM3w6Ax2r4WxBSj5VUslAARuud0ZCrC8MlEwdcyfw+Y=; b=Z2MOQLXQG1m0k3ulcDgbrDtZB28m6NVdccQU+8pp537Lk1xFRAnjrNOTOHZTO760a50zYn pNqB8ctarTgIXWfmjHZSWTy9Jgsey7YmReCRXCRY5B2WKMA1BY3QPuZASgJ/olmZ7VYxdW W6s4ZgjKTQErBQcmPE1zkNnpIxQZOzg= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-4-5OnVEdDdMLSCaX5eEoFN4w-1; Thu, 30 Jul 2020 16:16:23 -0400 X-MC-Unique: 5OnVEdDdMLSCaX5eEoFN4w-1 Received: by mail-wm1-f70.google.com with SMTP id s4so1584127wmh.1 for ; Thu, 30 Jul 2020 13:16:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:mime-version :content-disposition; bh=qM3w6Ax2r4WxBSj5VUslAARuud0ZCrC8MlEwdcyfw+Y=; b=Pyil3U7ENM0CK8of0Opb7DYo7v1aGvtZzKStR14n8nPX5NmhdlAvV0D+Lm7N+N/N6i qpqvJkSiUVaghq83z9n/KkgDOQlO4VEc1j83XMmGBIv9kYl1CwN0oqPhyFVWY0IOxtB5 t778OyLQvUBQkiZiF9nIskTgJwc7XCpXK5M6I3Lo6j8WCBY0h5fKcPoB+L5kdFecVYgn Hqmp1R+0AdGWtV6Sh+rUJ5bobi0RMnaL77R8OO14xe6k7QYolAKpy1ivTG1Qqht+vDNf mbi5xkUHSNvO/r8LqobepocM5JTic+g30h15VdsftQzL1LrtEXaprQTZuwMWbtKG+yNc 8A2w== X-Gm-Message-State: AOAM532CQiufXcvDkhaLvBrXnICaJT83YcPpGOoByCFXifbOTE7cDsqS H5Y3uQ7ooI4jdibXHsdu9Wj54JmIAl62/0sCguhAuVUGF6q3TOH1VqBFsMPiODpzuk3Yyfc/oht W3IOS78x8EBdLgpo0 X-Received: by 2002:a1c:7315:: with SMTP id d21mr757415wmb.108.1596140182502; Thu, 30 Jul 2020 13:16:22 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyaW4Btw9dZUceS/cij1HeCm0SFI2rEAGOXLL4HOI+53Vk16dXahuaRQktZI/xj2QB69Rhweg== X-Received: by 2002:a1c:7315:: with SMTP id d21mr757406wmb.108.1596140182316; Thu, 30 Jul 2020 13:16:22 -0700 (PDT) Received: from redhat.com (bzq-79-179-105-63.red.bezeqint.net. [79.179.105.63]) by smtp.gmail.com with ESMTPSA id g18sm11747978wru.27.2020.07.30.13.16.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Jul 2020 13:16:21 -0700 (PDT) Date: Thu, 30 Jul 2020 16:16:17 -0400 From: "Michael S. Tsirkin" To: Jason Wang , netdev@vger.kernel.org Subject: rcu warnings in tun Message-ID: <20200730161536-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Was building tun with sparse the other day, noticed this: drivers/net/tun.c:3003:36: warning: incorrect type in argument 2 (different address spaces) drivers/net/tun.c:3003:36: expected struct tun_prog [noderef] __rcu **prog_p drivers/net/tun.c:3003:36: got struct tun_prog **prog_p drivers/net/tun.c:3292:42: warning: incorrect type in argument 2 (different address spaces) drivers/net/tun.c:3292:42: expected struct tun_prog **prog_p drivers/net/tun.c:3292:42: got struct tun_prog [noderef] __rcu ** drivers/net/tun.c:3296:42: warning: incorrect type in argument 2 (different address spaces) drivers/net/tun.c:3296:42: expected struct tun_prog **prog_p drivers/net/tun.c:3296:42: got struct tun_prog [noderef] __rcu ** any idea when did these surface? -- MST